HIV Clinical Trial
Official title:
Prevalence and Risk Factors of Arterial Insufficiency in Patients With HIV / AIDS
The purpose of this study is to determine the risk factors associated with the occurrence of arterial insufficiency in patients with HIV / AIDS, and to identify the prevalence of this disease. The estimated prevalence is 10%, similar to that reported in the general population.
A case study nested in a cohort of patients with HIV / AIDS at Instituto Nacional de
Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, with a cohort of 1500 patients , a
sample size of 206 individuals was calculated. Data collection was performed in a
prospective cross shape.
During the interview, written informed consent for inclusion in the study, along with a
standard query of vascular surgery in which the patient's history as well as cardiovascular
risk factors. Also, a vascular physical examination including palpation of pulses in upper
and lower extremities (brachial, radial, ulnar, femoral, popliteal, posterior tibial and
dorsalis pedis), femoral murmurs search and determining ankle / brachial indexes with a
standardized method.
In determining the ABI was counted with a Doppler ultrasound 8 mHz, transducer gel and a
sleeve for manual measurement of blood pressure, 20% longer than the largest diameter of the
arm circumference.
If the patient is diagnosed with, symptomatic or asymptomatic arterial insufficiency, ABI
measurements were performed at rest and effort, plus pressure index finger-arm or
plethysmography. Patients with altered rates were followed in vascular surgery care.
The data were recorded in a single database unique protected by password. The results were
analyzed using the statistical program STATA v 9.0.
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